Neppe, Vernon M, and Edward R Close. “The Neppe-Close Triadic Dimensional Vortical Paradigm: An Invited Summary”. International Journal of Physics Research and Applications 3, no. 1 (January 13, 2020): 001–014. Accessed April 25, 2025. https://www.physicsresjournal.com/ijpra/article/view/ijpra-aid1018.